<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/touxiang.jpeg" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                  <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                  <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="submit">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template> 

<script>
export default {
    data(){
        return {
            //登陆表单的数据绑定对象
            loginForm: {
                username: '',
                password: '',
            },
            //表单的验证规则对象
            loginFormRules: {
                // 验证用户名是否合法
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
                ],
                // 验证密码是否合法
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods: {
        // 重置表单
        resetLoginForm() {
            // console.log(this);
            this.$refs.loginFormRef.resetFields();
        },
        //登录校验
        submit(){
            this.$refs.loginFormRef.validate( async(valid) => {
                // console.log(valid);
                if(!valid) return console.log('error submit!!')
                const { data: res} = await this.$http.post('login',{
                    username: this.loginForm.username,
                    password: this.loginForm.password
                })
                console.log(res);
                if(res.meta.status !== 200) return this.$message.error('登录失败'+ res.meta.msg)
                this.$message.success('登录成功');
                //保存token
                window.sessionStorage.setItem('token', res.data.token)
                //导航至/home
                this.$router.push('/home')
            } );
        }
    }
}
</script>

<style lang="less" scoped>
.login_container {
    background-color: #2b4b6b;
    height: 100%;
}
.login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}
.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns {
   display: flex;
   justify-content: flex-end; 
}
</style>